Q: In Europe leather men shoes have leather sole. Mostly this leather is from pork-leather since the sole has to be soft, and being soft is one of characteristic of pork-leather. Now it is that most Muslim buy such shoes and wear them. My question is since these shoes are commonly worn and we do not know exactly who wears them only that is very common, how should our behavior be in the rows of Salaah since people do stand feet to feet. Their socks do they become impure by wearing the shoes as inside the shoe there will some humidity after all, and people do touch each other with their feet i.e with the socks. Since this is a matter of Umoom al Balwaa what is the view of the Ulamaa on this issiue?